Center and Spread of Data

Which of the following best describes the shape of the distribution?

• skewed left

• skewed right

• uniform

• symmetrical

Should we use the mean or the median to represent the center of the data?

Which of the following best describes the shape of the distribution?

• skewed left

• skewed right

• uniform

• symmetrical

Given that the data is symmetric, which pair of measures should be used to represent the data?

• center: median

  spread: standard deviation

• center: mean

  spread: IQR

• center: mean

  spread: standard deviation

• center: median

  spread: IQR

Find the IQR of the distribution.

(only type in the number)

The range is the difference between the maximum and minimum values.

• True

• False

Which measure of center will be the smallest?

(Remember which one pulls toward the tail)

• median

• mean

• mode

The distribution shown is symmetric and we should use the mean and the standard deviation to describe the center and spread.

• True

• False

Describe the shape of the graph.

• skewed

• symmetrical

• uniform

Find the interquartile range?

• 8

• 6

• 5

• 4